Electronics Need help wiring something up? Thinking of adding an electrical component to your car? Need help troubleshooting that wiring glitch?

Damn Fuel Pump!!!

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Old Feb 17, 2003 | 03:05 PM
  #1  
JR92z28's Avatar
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From: Houston, TX.
Car: 1994 Z28
Engine: 5.7 LT1
Transmission: T56
Damn Fuel Pump!!!

Damn fuel pump!

Okay, my fuel pump went out(electrical), so I replaced with one from Hi/Lo Oreilly. Yes it sux to have to take the exhaust off and heat shield then drop the tank.
The worst thing is that I replace it, the car cranks right up with no probs. I put everything back in place. I bought a new car so I didn't have to drive my camaro when I finished.
So I cranked it up, let it run for a good 15-20 minutes.
I left it at my moms house because she has a 3 car garage.
I come back 3 days later, crank it up and let it run 15-20 minutes.
Well I let another 4 days go by, go to my moms to crank up the camaro and let it run for a bit. But the **** won't start.
It will turn and gets great power from the battery. Starter is new so I know it's not that. So I spray some quick start in the TB while turning the engine and it cranks up, well at least until what ever amount I spray in there is gone. So now I have another bad fuel pump on my hands.
Before I do this all over again, anyone ever had this problem?
Fuel pump brand? wiring? Did I do something wrong?
Your help and comments are greatly appreciated!
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Old Feb 17, 2003 | 06:11 PM
  #2  
deadbird's Avatar
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From: So.west IN
Car: 87 Formula/ 00 Xtreme
Engine: TPI 305/ v6
Transmission: struggling t-5/ 4l60E
Axle/Gears: 3.08/ 3.23
Jump direct power to the pump either by the relay or the ALDL connector to see if the pump will spin. If it (the pump) works, try a new relay. Also check for a blown fuse.
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Old Feb 17, 2003 | 06:32 PM
  #3  
Black88GTA's Avatar
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From: Long Island (Huntington), NY
Car: 88 GTA, 94 BMW 840, SVX, Prelude
Engine: 383 w/ Super Ram
Transmission: built 700R4 auto
Your gas tank might have lots of rust and scale in it that's being sucked up by the pump and clogging it...

Just something to check out.
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Old Feb 18, 2003 | 09:50 AM
  #4  
JR92z28's Avatar
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From: Houston, TX.
Car: 1994 Z28
Engine: 5.7 LT1
Transmission: T56
Originally posted by deadbird
Jump direct power to the pump either by the relay or the ALDL connector to see if the pump will spin. If it (the pump) works, try a new relay. Also check for a blown fuse.


Do you have a diagram of what pins to jump?
There is no fuse in the fuse box for a fuel pump.
The relay seemed to be fine. I'll replace it this weekend anyway.
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Old Feb 18, 2003 | 09:53 AM
  #5  
JR92z28's Avatar
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Joined: Sep 2002
Posts: 375
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From: Houston, TX.
Car: 1994 Z28
Engine: 5.7 LT1
Transmission: T56
Originally posted by Black88GTA
Your gas tank might have lots of rust and scale in it that's being sucked up by the pump and clogging it...

Just something to check out.

would it clog the pump or the filter?
Because I disconnected the fuel line that goes into the filter from the pump. I turned the key and it didn't shoot out much gas. I think it was just pushing out gas from all the pressure in the tank?. We also tried to listen for the pump to turn on when we turned the key on. But nothing. I'm almost sure it's the fuel pump.
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